diff --git a/docs/13-smoke-test.md b/docs/13-smoke-test.md
index c718540..564bcdb 100644
--- a/docs/13-smoke-test.md
+++ b/docs/13-smoke-test.md
@@ -17,7 +17,7 @@ Print a hexdump of the `kubernetes-the-hard-way` secret stored in etcd:
 
 ```
 gcloud compute ssh controller-0 \
-  --command "sudo ETCDCTL_API=3 etcdctl get \
+  --command "sudo etcdctl get \
   --endpoints=https://127.0.0.1:2379 \
   --cacert=/etc/etcd/ca.pem \
   --cert=/etc/etcd/kubernetes.pem \